Highly Efficient Products of 170lm/W (Separate Converter type) with elegant design. It looks great anywhere. (120~130lm/W Driverless type) With Max 20kV Power Surge protection device preventing the damage originated from the indirect surge and the inductive switching surge. Thermally stable aluminum stamping and diecasting structure and ultralight design to minimize the risk of falling loads. Adopting RF wireless dimming controller for remote on/off and the predetermined dimming with LTE communication (Option) By adopting the AC drive IC, a simplified and reliable circuit system has been ensured. (Driverless type) Not using the transformer and the electrolytic capacitors, the necessity of using the other components for modification of the PF, THD, and EMI has been fundamentally excluded. (Driverless type) With the perfect waterproof design and the AC drive IC, it can be applied for the refrigeration warehouse less than -30C as well as hazardous area lightings. (Option) By the internal PWM control, PIR sensing and dimming is also possible. (Option)